西南交通大学学报2026，Vol.61Issue(1)：65-73,9.DOI:10.3969/j.issn.0258-2724.20240098
玄武岩纤维风积沙混凝土单轴受压应力-应变试验研究
Experimental Study on Uniaxial Compressive Stress-Strain of Basalt Fiber Aeolian Sand Concrete
摘要
Abstract
In order to study the mechanical properties of aeolian sand concrete(ASC)under axial compression with different basalt fiber(BF)contents,the experiment took concrete with 0%fiber content as the reference group and designed the basalt fiber-aeolian sand concrete(BF-ASC)with different fiber content of 0.05%,0.10%,0.15%,and 0.20%.The influence of the BF volume fraction on the axial compressive strength,the peak stress,the peak strain,and the elastic modulus of ASC was analyzed.The results show that the peak stress and elastic modulus of the concrete first increase and then decrease with the fiber volume fraction.At 0.10%BF,the peak stress and elastic modulus of the concrete are 115.6%and 112%of the reference group,respectively.The peak strain and toughness indices increase with the volume fraction of the fiber.At 0.20%BF,the peak strain and toughness indices increase by 34.92%and 7.2%compared to the reference group.The entire stress-strain curve of BF-ASC undergoes three stages of elastic,elastoplastic,and failure,just like ordinary ASC.The BF-ASC constitutive relation can be described in terms of segments based on the Carreira and Chu model and the Guo Zhenhai's model.The ascending profile is consistent with the Carreira and Chu models,and the descending profile is consistent with the Guo model.In addition,a regression analysis is conducted on the BF-ASC uniaxial compressive constitutive model considering the BF content.The correlation coefficients are all greater than 0.98,and the model has a high degree of agreement with the experimental curves.关键词
玄武岩纤维/风积沙混凝土/单轴受压/本构模型Key words
basalt fiber/aeolian sand concrete/uniaxial compression/constitutive model分类
建筑与水利引用本文复制引用
董伟,泽里罗布,银英姿,薛刚..玄武岩纤维风积沙混凝土单轴受压应力-应变试验研究[J].西南交通大学学报,2026,61(1):65-73,9.基金项目
国家自然科学基金项目(52268044) （52268044）
